29 lines
384 B
C
29 lines
384 B
C
#include <stdio.h>
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#include <errno.h>
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int show_a_double (double x) {
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printf(">> double: %09.15f\n", x);
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}
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int usage(char *progname) {
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char *str;
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printf("usage: %s <double-value>\n", progname);
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exit(ENOTSUP);
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}
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int checkargs(int argc, char *argv[]) {
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double darg = 0.0;
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if (argc != 2) usage((char *const) argv[0]);
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else darg = atof(argv[1]);
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return darg;
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}
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